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Titolo:
Possible mechanisms of sugar maple regeneration failure and replacement bybeech in the Boise-des-Muir old-growth forest, Quebec
Autore:
Beaudet, M; Messier, C; Pare, D; Brisson, J; Bergeron, Y;
Indirizzi:
Univ Quebec, Dept Sci Biol, Grp Rech Ecol Forestiere Interuniv, Montreal, PQ H3C 3P8, Canada Univ Quebec Montreal PQ Canada H3C 3P8 univ, Montreal, PQ H3C 3P8, Canada Inst Rech Biol Vegetale, Montreal, PQ H1X 2B2, Canada Inst Rech Biol Vegetale Montreal PQ Canada H1X 2B2 al, PQ H1X 2B2, Canada
Titolo Testata:
ECOSCIENCE
fascicolo: 2, volume: 6, anno: 1999,
pagine: 264 - 271
SICI:
1195-6860(1999)6:2<264:PMOSMR>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
EFFICIENT METHOD; LEAF-LITTER; CANOPY; PATTERN; LIGHT; DYNAMICS; REGION; STANDS; TREES; GAPS;
Keywords:
Acer saccharum; Fagus grandifolia; regeneration; soil properties; understory light availability; root sprouting; old-growth forest; succession;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Beaudet, M Univ Quebec, Dept Sci Biol, Grp Rech Ecol Forestiere Interuniv,CP 8888,Succ Ctr Ville, Montreal, PQ H3C 3P8, Canada Univ Quebec CP 8888,Succ Ctr Ville Montreal PQ Canada H3C 3P8 a
Citazione:
M. Beaudet et al., "Possible mechanisms of sugar maple regeneration failure and replacement bybeech in the Boise-des-Muir old-growth forest, Quebec", ECOSCIENCE, 6(2), 1999, pp. 264-271

Abstract

To better understand the causes of sugar maple (Acer saccharum Marsh.) replacement by beach (Fagus grandifolia Ehrh.) in the Boise-des-Muir old-growth forest (Quebec), we studied, i) the effect of beech litter on soil properties, ii) the effect of low light availability on maple survival and iii) beech regeneration via root sprouts. Soil properties, understory light, seedling emergence and survival, height growth, and density distribution of maple and beech were compared between the old-growth stand and an adjacent managed stand where the abundance of maple regeneration was high. We did not observe any detrimental effect of beech litter on soil properties and maple early establishment. Overall light availability and maple stocking were lower. and maple density declined more markedly with increasing size in the aid-growth stand than in the managed stand. The deficient maple regeneration in the old-growth stand might be related to a lack of microsites where light availability is high enough for maple survival, and not to a lack of initial recruitment in this species. In the old-growth stand, beech was locatedin mon shaded microsites than maple hut had a higher growth. Size class distributions of maple and beech suggest that beech had a higher survival rate than maple and that beech sprouts had a higher survival rate than beech seedlings. Beech seems to be better adapted than maple to survive in the deep shade of the old-growth stand. However, we expect that maple will regain its dominance in the understory of the Boise-des-Muir with increasing standbreakup that is likely to occur in the future.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 17:01:41